An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
NSN 5999-01-165-7501
NSN 6610-01-504-7622
NSN 5905-00-511-6788
NSN 6320-00-925-0558
NSN 6110-01-252-9619
NSN 5910-00-108-1938
NSN 5905-01-529-0042
NSN 6110-01-176-2557
NSN 6320-00-098-2858
NSN 5935-01-607-0314
NSN 5990-00-804-4982
NSN 5998-01-434-7747